OL: The Emsmdb32.dll File Stops Responding When Used by a Multithreaded Program (307022)


The information in this article applies to:

  • Microsoft Outlook 97
  • Microsoft Outlook 98
  • Microsoft Outlook 2000, Service Release 1 (SR-1)
This article was previously published under Q307022

SYMPTOMS

Multithreaded programs that use MAPI may cause the Emsmdb32.dll file to stop responding in Microsoft Outlook.

CAUSE

This problem can occur because multithreaded programs use only one session to log on to different mailboxes.

RESOLUTION

Use the following methods to resolve this problem:
  1. Use Outlook 2002 instead of Outlook 97, Outlook 98, or Outlook 2000.
  2. Every thread must use its own MAPI session.
  3. Verify that the Contacts address book is removed from the profile.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

When the Emsmdb32.dll file stops responding, a stack similar to the following appears: 
Thread 1
ntdll!NtWaitForSingleObject+0xb
ntdll!RtlpWaitForCriticalSection+0xaa
ntdll!RtlEnterCriticalSection+0x46
EMSMDB32!MspCsEnterFn+0x79
EMSMDB32!PRVDROBJ__Release+0x24
EMSMDB32!UNKOBJ__Release+0x1b9
MSMAPI32!UlRelease+0xe

Thread 2
ntdll!NtWaitForSingleObject+0xb
ntdll!RtlpWaitForCriticalSection+0xaa
ntdll!RtlEnterCriticalSection+0x46
EMSMDB32!MspCsEnterFn+0x79
EMSMDB32!CNCTLIST__EcConnect+0xbb
EMSMDB32!LOGONOBJ__EcCreateRpc+0x10a
EMSMDB32!LOGONOBJ__EcConfig+0x183
EMSMDB32!EcOpenStore+0x1d3
EMSMDB32!MSPRVDROBJ__HrLogonReally+0x735
EMSMDB32!HrLocalRepLogon+0x47
EMSMDB32!RMSP_Logon+0x268
Modification Type:MajorLast Reviewed:5/10/2002
Keywords:kbbug kbMsg KB307022
©2002 Microsoft Corporation. All rights reserved.